fix(code):增加回调log

Assets/Scripts/sdk/core/PlatformCallback.cs

@@ -150,6 +150,8 @@ public class PlatformCallback : MonoBehaviour
 
     public void onPayGoodsList(string jsonStr)
     {
+        Debug.Log("Unity 收到商品列表: " + jsonStr);
+
         NativeLogger.I("fastsdk_unity_result", "[Unity] onPayGoodsList called with message: " + jsonStr);
         //goodsList = JsonConvert.DeserializeObject<List<GoodsInfo>(jsonStr);
         // 方法一：直接解析为List<GoodsInfo>